Line-check.



Patented Apr. 5, 1910.

algal/Ill? LINE CHECK.

APPLICATION FILED OCT. 29, 1909.

W. H. FOWLER.

M lt meme:

WILLIAM HENRY FOWLER, 0F FLOMATON, ALABAMA.

LINE-CHECK.

Specification of Letters Patent.

Patented Apr. 5, 1910.

Application filed October 29, 1909. Serial No. 525,268.

To all whom it may concern:

Be it known that I, WILLIAM HENRY FOWLER, a citizen of the United States of America, and resident of Flomaton, in the county of Escambia and State of Alabama, have invented certain new and useful Improvements in Line-Checks, of which the following is a specification.

This inventlon relates to certain new and useful improvements in line checks for use in connection with injectors and steam boilers, of that general class disclosed in my Patent No. 918,988 granted April 20, 1909.

The present invention has for its objects among others to provide an improved construction whereby the ball will change its position relative to its seat each time the ball is moved from its seat, or actuated, thus producinga self-grinding check. I

It has for a further object to provide ribs which serve to guide the ball and also hold it in its -cooperative position.-

It has for a further object to provide a construction whereby any sediment, iron rust or other corrosive substances will have aclean passage in order to produce a selfcleaning check'valve.

I :aim furtherat improvements in the details ofconstruction whereby the cost. of

manufacture is reduced and the device as a whole, and in its varlous parts, is materlally simplified.

. -Otherobjects and advantages of the inproved-construction. I

tlally central longitudinal section through vention will hereinafter a pear and the novel features thereof will be particularly pointed out in the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the numerals of reference marked thereon, form a part of this specification, and in.which.-

-Figure 1 is a side elevation of 111 im- Fig. 2 is a su stan:

the same. Fi 3 is an end view of thereducer remove showin its lugs. Fig. 4 is a detail of one of the ri s.

Like numerals of reference indicate like parts in the several views.

Iteferringto the drawings, 1 designates a casing formed with a chamber 2, and at one end with the inner annular flange 3, the

/ purpose. The opposite end of the casing is interiorly threaded, as seen at 8, for the adjustable' connection therewith of the coupling 9 which is provided with exterior threads 10, for such purpose, the other end of the coupling being interiorly threaded, as at 11,' and exteriorly with the hexagonal portion 12, for an obvious purpose. This coupling is formed with the interior lugs 13, as shown, the inner ends of which are beveled, as seen. at 14. The coupling is screwed into the end of the main body or casing 1 and is provided with an annular shoulder 15, as seen in Fig. 2, which constitutes a ground joint with the end of the casing.

The main body or casing 1 is formed interiorly with ribs 16.v which are arranged spirally and which extend from the screw threads 8 to' the seat 4, as will be clearly understood upon reference to Fig. 2. These ribs-form uides for'the ball 5 to its seat. When the evioe is put on the injector, the pressure from the injector will cause the ball to roll over a number of times before it hits the front seat. This turning keeps the ball clean.

Each guide rib iscut-away at the center, as seen at 17, so as to allow any scales to pass on by the ball while the injector is working and go on into the boiler. It will be understood that while the injector is working, the ball is seated on the seat 14 of the lugs 13 of the/coupling. The oheckis -in position any way it stops on the line of pipe. It is not necessary to employ a strainer, as the construction is such that the ball cannot go into the endof the casing. The lugs provide'a water s ace around the ball. Inap--.

position between the injector and theLbOiIer check.

Upon reference to Fig. 2, it will be noted that the .coupling is provided at its inner end with ,a beveled ed e 18 which is coincident with an annular eveled wall 19 at the adjacent end of the casing 1, so that any sediment, iron rust, or other foreign substances will have a clean assage, in order to produce a self-cleaning c eck valve.

Upon reference to Fig. 2, it will be readily seen that the lugs on the coupling are so arranged that when the discharge of the pump is going in the direction of the arrow in said 2, the lugs will stop the ball yet there w' be suflicient clearance around the ball,

. without departing from the spirit of the invention or sacrificing any of its advantages.

What is claimed as new is 1. A line check comprising a casing, a ball therein, and spirally disposed guide ribs within said casing extending substantially the entire length thereof and-cut away intermediate their ends to form transverse passages.

2. A line check comprising a casing, a ball therein, spirally disposed guide ribs within the casing having transverse passages for the passage of scale, etc., and a coupling engageable in one end of said casing and having inwardly extending lugs.

3. A line ball check comprising a chamber having a seat at one end, longitudinally disposed spiral guide ribs, and a seat for the ball at the opposite end of the casing, said gukiige ribs being cut-away intermediate their en 4. A line check com rising a casing h ing a seat at one endi longitudinally 's posed spiral guide ribs cut away intermediate their ends, a ball mounted for movement within the casing to be guided by said ribs, and a coupling having ribs against which the ball is adapted to be seated, the adjacent portions of said coupling and casing being correspondingly beveled.

5. A line check comprising a casing, a ball movably mounted therein and adapted to be seated at one end, means at the opposite end providing a seat for the ball and a clearance, and means within the casing for guiding the ball and causing it to partially revolve, said last-named means havin transverse passages for scale, etc., beneat the ball.

' Signed by me at Flomaton, Ala., this 27 day of Oct. 1909.

WVILLIAM HENRY FOWLER. Witnesses:

B. M. TURNER, T. W. HENDERSON. 

